Intermittent roll feed mechanism



(No Model.) 2 SheetsSheet 1.

H. K. JONES. I INTERMITTENT ROLL FEED MECHANISM.

No. 314,451. Patentedr. 24, 1885.

2 Sheets Sheet 2.

(No Model.)

H. K. JONES. V INTERMITTENT ROLL FEED MECHANISM. No. 314,451.

Patented Mar. 24, 1885.

IN I

HORACE K. JONES, OF HARTFORD, ASSIGNOR TO THE RUSSELL & ERWINMANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT.

INTERMITT ENT ROLL FEED MECHANISM.

SPECIFICATION forming part of Letters Patent No. 314,451, dated March24, 1885,

Application filed August 11,1884. (N model.)

To all whom it may concern.-

Be it known that I, HORACE K. J ONES, of Hartford, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Intermittent Roll Feed Mechanism for Delivering MetalRods, Wire, or Plates, &c.; and I do hereby declare that the followingspecification, taken in connection with the drawings furnished and form-IO ing a part of the same, is a clear, true, and

complete description of my invention.

My said improvements relate to what is known as friction feedingmechanism, as distinguished from the well'known pawl-andratchet feed,and although they are applicable to any variety of metalworkingmachinery in which rolls are employed for intermittingly feeding metalbars, rods, wire, or plates to be worked into various forms, I havespecially organized them for use in feeding wire to nail and screw blankheading machines; and it is in those or analogous connections that theyhave their prime value. It is well known that wire intentionally of thesame gage varies not only as between one coil and another, but also asbetween the two ends of the same coil of wire, and that wire of anygiven size must be fed to a lesser extent to form a head of a given sizethan smaller wire go for forming a head of the same size, and thereforeit is important, if uniformity in heads is to be obtained, that thefeeding mechanism should not only be capable of variation, but also thatany desired variation may be made 5 easily and promptly and withoutstopping the machine. I-Ieretofore variations in friction feedingmechanism of the class referred to have only been provided for by theuse of a radially-slotted crank-plate and a pitman 0 having a pivot-boltradially adjustable in the crank-plate slot, and although a slottedcranka plate is preferably employed by me for making radical variations,as when the machine is at rest, an ordinary crank can be used, be-

5 cause I provide as a novel feature means for making both radical andnice adjustments without stopping the machine. So far as my knowledgeextends, I am the first to organize with friction feeding mechanismmeans whereby either a radical or a nice adjustment, or 0 both, can bepractically effected while the mechanism is in motion, and the mainfeature of my invention involves the combination, with the friction-shoeblock and its lever, of

an adjusting-screw by which variations in 5';

feed may be readily made while the machine is in motion, however saidlever may be vibrated. I employ the usual friction-disk and a pivotedblock on a swinging arm or lever, which is connected by a pitman to acrank plate, or it may be operated by a cam; but instead of having, asheretofore, no adjustable connection between said block and themechanism which vibrates the lever or arm on which said block ismounted, I provide said block with a hand-screw tapped therein. \Vhen a.pitman is employed, it is flexibly connected to a nut which is fittedto said hand-screw, so that by turning said. screw the point ofconnection with the pitman will be movednearer to or farther from thearm or lever on which the pivoted block is mounted, and thus cause saidarm to be variably vibrated and to correspondingly vary the extent ofintermittent rotation of the friction-disk and of the feed- 7 5ing-rolls, one of which is, as usual, mounted upon the same shaft whichcarries the frictiondisk. WVhen a pitman is not employed, and thefriction-block arm or lever is vibrated by a cam and a spring or'weight,the adjusting- 8o screw not only serves for nice adjustments, but alsofor radical adjustments, either or both of which can be promptly andreadily made without stopping the mechanism.

To more particularly describe my invention, I will refer to theaccompanying two sheets of drawings, in which- Figure 1, Sheet 1, is aside view of feeding mechanism embodying my improvements in connectionwith a slotted crank-plateand pit- 0 man. Fig.2 is a top view of thesame. Figs.

3 and 4 are respectively side and top views of similar mechanism, butdifferentlyorganized. Figs. 5 and 6, Sheet 2, are respectively. side andtop views of feeding mechanism embodying the main feature of myinvention in connection with a cam and spring for Vibrating thefriction-block arm. Fig. 7 is a side View screws a, as heretofore, forenabling the rolls to properly pinch or engage with the interposed rods,wire, or plates to be fed by them,

and, as heretofore, the'lower roll is mounted upon the-shaft b, whichhas keyed thereon at one end the friction-disk 0, having a smooth, plainperiphery, against which the frictionshoe (1 engages, this latter beingloosely jointed to the front end of a block, 6, which is freely pivotedbetween two arms, which in turn'are pivotally mounted upon the shaft 1),with the friction-disk located between them, all substantially asheretofore, the said arms constituting a lever, f.

The slotted crank-plate B is mounted upon a shaft geared to anyrevolving portion of the machine with which the feed-rolls are to beused, and the lever f, shoe-block e, and frictionshoe are vibrated in avertical plane by said crank-plate,which has heretofore been soconnected with the lever or arm f by means of a rod or pitman, 9, thatvariations in the vibratory movement of said lever could only beeffected by moving the pitmanpivot-bolt 9 toward or from either end ofthe radial slot in the crank-plate, and this could obviously only bedone while the machine was at rest.

As a novel feature in this-class of intermittent roller feedingmechanism, I have introduced the hand-screw Obetween the outer end ofthe pitman g and the outer end of the lever or arm f. The lower end ofthis screw is journaled to fit a vertical bearing in the shoeblock e,and has a nut, h, at its lower end, by which the screw and block arefirmly united, while leavingthe screw free to be rotated in its bearing.A nut, z, is fitted to the screw, and has two ears, between which theouter end of the pitman g is pivoted, thus enabling the crank-plate tovibrate the lever f as if the latter-were directly pivoted to the end ofthe pitman.

For limiting the vibration of the shoe-block during the downwardmovement of the lever f, an abutting-screw, k, is tapped through anupwardly-projecting portion of said lever at its outer end, so that theinner end of said screw 70 will serve as a variable abutment or stop forlimiting the rearwardly vibratory movement of the hand-screw.

described, the abutting-screw It being also here applied for operatingas before described.

It will be seen as thus far: described that for all radical variationsin feed the pitman may be adjusted in the slot of the crank-plate, asheretofore, but that all lesser adjustments which are desirable'asincidental to variations in the size of wire, &c., can be readily madewhile the mechanism is in motion by turning the hand-screw in onedirection or the other, according to whether a greater or lesserlengthof rod or wire is to be delivered by the feedrolls.

It will be obvious that other well-known means for reciprocating thepitman may be substituted for the crank-plate shown without departurefrom the main feature of my invention, as illustrated on Sheet 2.

In Figs. 5 and 6 it will be seen that the friction-disk a, shoe d, andpivoted armf on the disk-shaft b are all as before described, and' alsothat the shoe-block c has a tail-piece, e, as in Figs. 3 and 4. In thisorganization, however, the revolving cam B performs a portion of thefunction of the crank-plate B, before described, in effecting thelifting or feeding movement, and the springlcauses the downward orreturn movement. The cam B being incapable of adjustment, I here relyupon 'the adjusting hand-screw O to serve also as a stop-screw forlimiting the downward or return movement of the shoe-block by abuttingwith its lower end upon a stationary shelf or bracket, m. In this casethe hand-screw is tapped into a hole in the tail-piece e, and the latteris longitudinally slotted in the vertical plane of the hand-screw, andhas a lateral clamp-screw, n, for so clamping the adj ustingscrew in itsthreaded seat as to prevent it from working loose, and said clamp-screwis provided with a handle,by which it can be readily tightened orloosened.

While in most cases it is best to employ with the block 6 afriction-shoe, this latter may be sometimes omitted as a separatedevice, as for light work, by having the block e'prolonged or extended,so that its end will operate as a shoe by its contact with the peripheryof the friction-disk c, the lever f and screw 0 being substantially aspreviously described, as illustrated in Fig. 7

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1 The combination, substantially as hereinbeforedescribed, of the feed-rolls, the friction-disk for intermittinglydriving said rolls, the vibrating arm or lever pivoted on the shaft ofsaid disk, a friction-shoe block pivoted on said arm or lever, and theadj usting-screw mounted in said block for varying the vibratorymovement of said arm or lever, and consequently varying the feedingmovement of the rolls, as set forth.

2. The combination, substantially as hereinbefore described, of thefeed-rolls, the friction-disk, the shoe and its pivoted block, the

serew serving as an adjustable connection between said pitman andpivoted block, substantially as described, whereby variations in theintermittent movement of the feed-rolls can be readily made while themechanism is in motion.

HORACE K. JONES.

Witnesses:

PHILIP F. LARNER, HOW'ELL BARTLE.

